: Incredible Expanding Mindfuck, also known as I.E.M., was a musical project by Steven Wilson (the leader of British rock band Porcupine Tree). Its work is mainly influenced by Krautrock and experimental music from the 1960s and 1970s. I.E.M. is more experimental than Wilson's more well-known bands, and is almost entirely instrumental. I.E.M. is seldom discussed in any depth by Wilson in interviews and the album packaging provides very little information. Read more about Incredible Expanding Mindfuck on Last.fm.